Oil-burner.



PATENTED MAR. 29, 19o4.

A. JOHNSON. OIL BURNER. APPLICATION FILED JAN. 24. 1993.

2 SHEETS-SHEET I.

no lionnL.

. ATTO Er.

m: ncnms PETERs co, PHOTO-THO, vw-snmcron. n cy PATENTED MAR. 29, 1904:.

A. JOHNSON.

. OIL BURNER.

APPLICATION FILED JAN. 24, 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

1 ENTOR.

' ATTO NE).

WITNESSES.-

TNE NORms PEFEHS cm. FHOTU-l n'uo. wnsumc.

UNITED STATES Fatented March 29, 1904.

PATENT OFFICE.

OIL-BURNER.

SPECIFICATION formingpart of Letters Patent No. 755,880, dated March 29, 1904:.

Applicati n filed January 24, 1903. Serial No. 140,373. (No model.)

To all whom it may concern.-

Be it known that I, AUGUST JOHNSON, a citizen of the United States, residing in the city and county of San Francisco, State of Califor nia, have invented an Improvement in Oil- Burners; and I hereby declare the followingto be a full, clear, and exact description of the same.

My invention relates to certain improvements in oil or hydrocarbon burners.

It consists in a means for supplying air and regulating the supply and means for distributing the oil and air to the burner, all of which will be more fully explained by reference to the accompanying drawings, in which Figure 1 is a vertical section of the apparatus. Fig. 2 is a perspective view of the oildistributer. Fig. 3 shows the oil-distributer inclosed-in one of the air-chambers. Fig. 4: is a rear View showing the gates.

The device consists of a suitable frame A, having a plate 2 fixed to it, and this plate has a central connection for an oil-feed pipe 3, and exterior to this connection are a series of transversely-elongated rectangular openings 4: and 4:, respectively above and below the oil-inlet pipe. The oil-inlet pipe connects directly with an inclined concaved receivingplate 5,having the lower end curved,as shown, and with upturned serrated teeth, as at 6, this forming a distributer over which the oil flows down and through the teeth of which it is delivered beyond the mouth of the distributer.

Fixed to the plate 2 or otherwise conveniently attached to the apparatus are a series of convergent plates, as at 7 which form rectangular air-spaces both above and below the oil distributer and inlet, and these are preferably made of different sizes and convergent, so as to inclose the oil-distributer.

8 is a trunk throughwhich air is supplied,this trunk being fixed to a flange or otherwise attached to the outer plate A, and the oil-feed pipe may be carried through the air-trunk in any suitable or desired manner, as shown. Air may be brought through the trunk 8 under any desired pressure, and it is designed to so employ this air that the oil may be delivered at a very low pressure.

5 9 represents slidable gates mo ble to expose or close the air-channels formed between the plates 7. These gates 9 are here shown as being connected by pivoted links 10 with lever-arms 11, fulcrumed to the apparatus, as by supports 12 or in other convenient manner. The lower lever-arm 11 is here shown as connected with the upper one by means of a pivoted connecting-bar, as at 13, so that by the movement of the lower arm 11 both sets of gates may be simultaneously moved to or from each other. It will be understood that various mechanical connections may be made to produce this result in moving the gates; but the device here shown is a good operative one. The edges of the plates 7, which inclose the oil-distributer and are contiguous to it, are

preferably sharpened off and very thin. The air-space below the distributer is larger than the one above,and the arrangement of the gates is such that the lower inlet will be opened before the one above, thus admitting a jet of air below the plate, which commences the atomizing of the oil. By moving the gates alittle farther apart a similar sheet of air is admitted from above and the two united above and below, the oil ejecting it into the furnace or other part, where it is to be used in a fine spray mixed with air. This will make. a light fire. When it is desired to increase the fire, the gates are further opened, so as to expose another pair of the channels between the plates 7 respectively above and below the air-inlets previously mentioned, and a further supply of air under pressure is thus admitted and concentrated upon the ejected products, thus increasing the amount of air and the corresponding combustion as may be desired. In this manner as many of these air inlets or channels may be opened as may be required and to any degree that the fire makes necessary.

Where a strong fire and high temperature are required, the portion of the apparatus heretofore described will be sufficient; but in cases where the burner is to be employed, as in steam-boiler furnaces, for instance, it is desirable to reduce the strength of the fire, and this is effected by attachment of a device which is shown at 15.. This consists of a rectangular box open, at the inner and outer ends. I have here shown the device as made with divergent ends and having a little greater length transversely than the length of the outer discharge-passage of the previously-described portion of the apparatus, so that when fixed thereto the narrower end of the device 15 will lit over the discharge of the outer airpassages 7 and extending a short distance beyond at each end will allow air to be admitted at each end and also, if desired, above the passages 7. The device 15 is provided with a flange or extension, as at 16, and this extending beneath the lower portion of the bottom air-passage may be bolted thereto, so that the discharge from the oil and air passages 3 and 7 takes place directly into this divergent attachment. The result of the action of this attachment is to reduce the more intense heat of the flame and introduce with it the additional body of air and to cause a swirling motion, and the ignition of the inflammable vapors takes place within this extension 15, the products of combustion being discharged from its front end and into the furnace, of whatever description, in which it is to be utilized. The inner edge of the lower side of the attachment 15 has a raised rib or lip, as at 17, which serves to prevent any drip or escape of oil from the rear in case of excessive supply.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-

1. The combination in an oil-burner of a fuel-feed pipe, a distributing-plate over which the oil passes, and from the outer edge of which it is discharged, a plurality of inclosing air-supply passages, and gates by which the admission of air through said passages is controlled.

2. An oil-burner consisting of a centrallydisposed oil-distributing passage converging to a narrow discharge-slit at the front and having the lower edge turned upward and formed with notches or channels, a pipe through which oil is delivered to the rear end of said passage, a plurality of air-inlet passages surrounding the oil-inlet and concentric therewith, said passages converging and discharging successively outside of the oil-discharge, gates by which said passages. are controlled and successively opened or closed, and an airtrunk connecting with the rear or inlet ends of said passages.

3. An oil-burner consisting of a centrallydisposed oil-distributer convergent from the rear and forming a narrow horizontal slit at the front with the lower edge upturned and serrated, a pipe through which oil is delivered into the rear end of said distributer, airpassageslocated above and below the distributer converging so as to inclose its mouth and project slightly beyond, other similar convergent air-passages inclosing the first named and projecting slightly beyond their dischargemouths, an air-trunk delivering air into the rear of all of said passages, vertically-slidable gates controlling said passages and adapted to open them successively, and mechanism by which the gates are actuated.

4. An oil-burner consisting of a distributer convergent from the rear to the front and terminating in a narrow horizontal serrated slit, a pipe by which oil is delivered to the rear end thereof, concentric convergent air-passages surrounding the distributer, and discharging around and in advance of its discharge-mouth, a trunk by which air is delivered to the rear of said passages, verticallyslidable gates, mechanism by which said gates are moved to successively open the air-passage directly below the oil-distributer and the air-passage above and in the same manner to successively open the exterior surrounding air-passages.

5. An oil-burner consisting of a convergent oil distributer having a narrow horizontal discharge-slit at the front, concentric surrounding converging air-passages and means for supplying air to the rear, vertically-slidable gates and mechanism consisting of fulcrumed levers and connecting-links. said levers being united to move in unison and to open the air-passages so that air is first admitted through the first passage contiguous with the bottom of the oildistributer, then the air-passage contiguous with the top of the distributer and the other air-passages successively.

6. The combination with a burner and fuelfeeding means, of a box-like structure into which the mixed products are received said structure having its bottom extending at one end to form a flange which supports and is fitted to the discharge end of the burner, and said burner and the box-like structure being separated from each other at their upper portions to form an air-passage.

7. The combination with a burner and fuelfeeding means, of a box fitted to the discharge end of the burner and provided with a bottom flange or extension by which it is secured to the burner, and a raised rib or lip at the base of said flange or extension.

In witness whereof I have hereunto set my hand.

AUGUST JOHNSON. Witnesses:

S. H. NoURsE, JESSIE (J. BRODIE.

IIO 

